How can I manipulate strings in C++ using the std library?

How can I manipulate strings in C++ using the std library?

You can use the std::string class for string manipulation. It provides various methods like append(), substr(), and find().

Can you give me an example of using substr()?

Sure! Here's an example: std::string str = "Hello, World!"; std::string sub = str.substr(7, 5); This will give you "World".

What about replacing a part of the string?

You can use the replace() method. For example: str.replace(7, 5, "C++"); will change "World" to "C++".

Are there any functions for trimming whitespace?

Yes! You can use std::string::erase() along with find_first_not_of() and find_last_not_of() to trim whitespace.